Thank you, Jason.
Yes, I had a look at their site initially and it seems likely that the castings ARE for the 2V-10.
I’ve just received a very fast response from Ronnie at Rappahannock Boats with a parts list for comparison and that they stock plans and parts for all their products – prices appear very reasonable. I have sent a further message to them for final confirmation and will, almost certainly, be ordering the plans.
Could keep me out of mischief for quite a while!
Rgds
Bill